MCP3909-I/SS Microchip Technology, MCP3909-I/SS Datasheet - Page 55

• Manufacturer Part Number: MCP3909-I/SS
• Description: IC POWER METERING-1 PHASE 24SSOP
• Manufacturer: Microchip Technology

Specifications of MCP3909-I/SS

• Package / Case: 24-SSOP (0.200", 5.30mm Width)
• Input Impedance: 390 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.85V
• Current - Supply: 2.3mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Meter Type: Single Phase
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Supply Voltage Range: 4.5V To 5.5V
• Digital Ic Case Style: SSOP
• No. Of Pins: 24
• Interface Type: Serial, SPI
• Supply Voltage Max: 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP3909EV-MCU16 - EVALUATION BOARD FOR MCP3909MCP3909RD-3PH1 - REF DESIGN MCP3909 3PH ENGY MTR
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.6
© 2009 Microchip Technology Inc.
TOTAL HARMONIC DISTORTION (THD) COMMAND
TABLE 6-10:
TABLE 6-11:
TABLE 6-12:
TABLE 6-13:
1,2
3,4
5-56
57,58
59,60
61,62
63-126
127,128
1-4
5-8
9-12
13-16
17-20
21-24
Data Field
Data Field
0xFF, 0x00
0xFF, 0x00
START
START
Byte
Byte
Fundamential or 1st Harmonic, Voltage Content
2nd Harmonic, Voltage Content
3-31st Harmonic, Voltage Content
Total Voltage Harmonic Content (not including
Fundamental)
Fundamential or 1st Harmonic, Current Content
2nd Harmonic, Current Content
3-31st Harmonic, Current Content
Total Current Harmonic Content (not including
Fundamental)
Total Harmonic Distortion of Phase A Voltage
Total Harmonic Distortion of Phase B Voltage
Total Harmonic Distortion of Phase C Voltage
Total Harmonic Distortion of Phase A Current
Total Harmonic Distortion of Phase B Current
Total Harmonic Distortion of Phase C Current
Command
Command
HARMONIC ANALYSIS DETAILED DESCRIPTION
PC TO METER (7 BYTES)
METER RESPONSE (29 BYTES)
TOTAL HARMONIC DISTORTION DESCRIPTION
0x46
0x47
Meter Communications Protocol
Length
Length
Data
0x00
Data
0x18
Description
Description
Data Field
Data Field
24 bytes
0x00
Check Sum
Check Sum
XX
XX
Unsigned Int, 2 bytes
Unsigned Int, 2 bytes
Unsigned Int, 2 bytes
Unsigned Int, 2 bytes, /
1000 * (100%)
Unsigned Int, 2 bytes
Unsigned Int, 2 bytes
Unsigned Int, 2 bytes
Unsigned Int, 2 bytes, /
1000 * (100%)
Float, 4 Bytes Total
Float, 4 Bytes Total
Float, 4 Bytes Total
Float, 4 Bytes Total
Float, 4 Bytes Total
Float, 4 Bytes Total
DS51723A-page 55
Value
Value
STOP
STOP
0xE0
0xE0